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Studies in grazing management I. A comparison of the production obtained from close-folding and rotational grazing of dairy cows

Published online by Cambridge University Press:  27 March 2009

W. Holmes ,
R. Waite ,
D. L. Fergusson  and
Jean I. Campbell
W. Holmes
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
R. Waite
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
D. L. Fergusson
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
Jean I. Campbell
Affiliation:
The Hannah Dairy Research Institute, Kirkhill, Ayr
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Extract

1. An experiment was carried out from 3 May to 10 October 1949 to compare close-folding with rotational grazing of dairy cows. With close-folding the cows were moved daily to an area of fresh pasture which was calculated to supply the day's feed requirements; the rate of stocking ranged from 50 to 80 cows per acre. With rotational grazing the cows were stocked on pasture at the rate of 6–8 cows per acre and moved from one pasture to another at intervals of 5–14 days. Two uniform groups of Ayrshire cows were used, and each group spent a period on each system of grazing. Two pastures, a ryegrass-dominant old pasture and a cocksfoot-dominant ley, were used, and as far as possible the pasture grazed by both groups of cows was similar. Nitrogenous top dressings up to 104 Ib. nitrogen per acre in the season were applied uniformly to both the close-folding and rotational areas. No supplementary feeding was given to the cows.

2. The best methods of close-folding practised gave 215 and 201 cow-days of grazing per acre with 550 gal. milk per acre from the cocksfoot ley and 582 gal. from the permanent pasture. Rotational grazing on the same two pastures gave 181 and 138 cow-days and 450 and 351 gal. milk per acre respectively.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 40 , Issue 4 , October 1950 , pp. 381 - 391
Copyright
Copyright © Cambridge University Press 1950

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